KEY TO THE SECTIONS OF STIPITATE POLYPOROIDS. 



There are included here only the stipitate species of the old genus Polyporus. The allied genera 

 as Favolus, Laschia, etc , are not here considered. 



Sub-woody. 



With woody fibrils but not perennial and not having the pores in strata 

 (except as to the first). 

 Pores in areas of growth (indistinctly stratified) Fomes. 



Pores Not Stratified. 

 Spores colored (mostly elliptical) with a strong apiculus. Context 



colored. Surface of most species laccate. (Cfr. also p. 99) . . . .Ganodermus. 

 Spores colored, mostly globose, with none or a small apiculus. Context 



colored. Surface of most species dull. (See p. 09) Arnaurodermus. 



Spores white. Context (except sec. n) pale or white Lignosus. 



Fleshy or Coriaceous. 



Stipe lateral (Spores white) Petaloides. 



Stipe branching and bearing several pileoli Merismus. 



Stipe Central or Excentric (Rarely Lateral). 



Flesh spongy, light (Spores white or colored) Spongiosus. 



Spores colored. Fleshy or coriaceous Pelloporus. 



Spores white. Fleshy, soft, usually terrestrial, with thick pilei Ovinus. 



Spores white. Fleshy-pliant, coriaceus, usually thin pilei, and epixy- 



lotis Lentus. 



Lentus with black stems Melanopus. 



SECTION FOMES (STIPITATE.) 



Although the first sixty-one species placed in Fomes in Saccardo (Vol. 6) 

 have stems, I believe there is but one of them that can be so included on the 

 definition there given and generally accepted for this genus, viz. : "perennis, suc- 

 cessive strata nova gerens." Many are subligneous in texture, but are annuals 

 in temperate regions, and in the tropics if they persist more than one season 

 (which is doubtful) they do not produce successive pore strata. The following 

 is the only one in which I have noticed the slightest indication of strata. 



DIABOLICUS (Fig. 397). The entire plant (except the pores 

 and context) is black. Stem mesopodal, with pale, solid context, and 

 black, smooth, dull crust (i-i/4 x8-io cm.). Pileus (8-14 cm.) black, 

 even, depressed in the center, with black, smooth, dull surface. Con- 

 text (5 mm.) pale cinnamon color. Pores minute, at first cinnamon, 

 but black when old. If not in layers at least in distinct areas of growth. 

 Colored setae very abundant on the. hymenium. Spores not found, 

 doubtless white. This is a rigid, black plant, growing on wood in 

 Brazil. It is known only from Spruce's original collection. In its 

 context color, setae, and spores (probably) it is related to Fomes 

 pomaceus, but there is no other similar stipitate species known. 



100 



